body {
    margin: 0;
}

.underlinecss {
    text-decoration: underline;
}

/* // 鼠标移动上去后显示小手 */
.xiaoshoucss {
    cursor: pointer;
}

.noselectcss {
    user-select: none;
    -webkit-user-select: none;
    /* Safari */
    -moz-user-select: none;
    /* Firefox */
    -ms-user-select: none;
    /* IE/Edge */
}

.center{
  display: flex;
  justify-content: center;
  align-items: center;
}
.bluecss{
    background-color: blue;
}
.lightbluecss{
    background-color: #5597f8;
}
.wightFontcss{
    color: white;
}
.height20px{
    height: 20px;
}